/*
 * Copyright 2012 Andrea Parodi
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package eban.storebyrules.filters;

import eban.storebyrules.typemanagement.FieldTypeManager;

public class BinaryFilter extends AbstractFilter {
	public BinaryFilter(String fieldName, Object value) {
		super();
		this.fieldName = fieldName;
		this.filterOperator = FilterOperator.Equal;
		this.value = value;
	}
	public BinaryFilter(String fieldName, FilterOperator filterOperator,Object value) {
		super();
		this.fieldName = fieldName;
		this.filterOperator = filterOperator;
		this.value = value;
	}
	
	
	
	String fieldName;
	FilterOperator filterOperator;
	Object value;
	
	@Override
	public String defaultSQlClause(){
        FieldTypeManager manager = FieldTypeManager.Registry.findManager(value.getClass());
        return fieldName+" "+filterOperator.getDefaultSqlOperator()+" "+ manager.toEngineValue(value);
	} 
	public enum FilterOperator{
		Equal("="),
		NotEqual("!="),
		Great(">"),
		Less("<"),
		GreatOrEqual(">="),
		LessOrEqual("<=");
		
		private FilterOperator(String defaultSqlOperator) {
			this.defaultSqlOperator = defaultSqlOperator;
		}
		
		protected String getDefaultSqlOperator() {
			return defaultSqlOperator;
		}

		String defaultSqlOperator;
	}
}
